I hope I can return the favor some day.

(언제가는 이 은해를 갚울수 있기를 바래)

You were a huge help.

(큰 도움이 되었어)

I'm really sorry for what happend.

(불미스러운 일이 생겨서 정말 미안해)

It was totally my fault and I want to apologize.

(모두 내 잘못이야. 사과할께)

It will never happen again. I promise.

(다시는 그런일이 없도록 할께. 약속해)